Lifting jack



Feb; 20, 1923.

ac. BATES LIFTING JACK Filed Oct. 15, 1920 v I E31 Patented Feb. 20,1923.

EDMUND o. BATES, on ALLIANCE, onio, Assrenon TO T E snonnvn aaox rrmrnorunme COMPANY, or en rance, onqro, a CORPQBATIONDF 501110,

LIrrrNe JACK.-

Application filed. October 15, 1920. Serial No. 417,271.

To all whom it may concern. I

Be it known that I, EDMUND C; BATES,

citizen of the United States, residing at Alllance, inthe county ofStark and State of Ohiol, have invented a certain new and axles ofautomobiles-and other vehicles. The

conditions under which such jacks are employed vary greatly, .not onlyon account of different heights of axles, but also due'to varyingelevations of the road surface on, which the jack is placed. The rangeof operation of the jackkmust accordingly be comparatively great, and atthe same time the size of the-Jack must-be kept small, for

efiicient use in connection -withan auto-.

mobile.

The object of this invention is to provide a jack which, while beingsmall in compass, shall have a wide range of lifting heights, operatingwith eflicienc on axles that are comparatively close to t e ground andaxles that are comparatively high abjove the I ground,'as well as at allintermediate eleva tions. In accomplishing this,I provide the raisa'blevmember of the jack with. an extension device which may beheld at theside of such raisable member as a step for low heights, or positioned ontop of the raisable member as an extensiom where' thexaxle is high. Theinvention includes such a feature away, of the movable step orextension,

In the drawings, A represents a suitable base member having a verticalguideway, in which is slidably mounted a rack bar B. At

' the upper endof this rack bar is a suitable seat 0, which is; formed.for convenient engagement with either .a round or fiat bottomed axle,or with any bracket which may Y be attached to the brake drum orelsewhere for the convenient application of a jack. D

indicates thesocket of an oscillating handle enables the oscillation ofthe handle to raise or lower the bar B, as will be understood. Thismechanismina'y be of anyapproved type; it is located in a cavity; in thebase member behind a removable plateE.

The raisable member beside the-bar B and; the head C includes-a verticalbar F2 con nected with the head C (being preferably integral with it)and connected also with the 1 lower portion of the bar-B thru a slotA'in the rear. vertical edge of the base frame,j*asx* is shown andexplained in prior Patent No. 1,189,778, issued July 4., 1916. ontheJflrear edge ofthis side bar F is formed a vertical series of teeth,ornotches If, while in the sides of this bar f, are vertical grooves orrecesses 7. G indicates the movable step or extension; this is a blockhaving a pair of 7 arms .9 extending onto opposite sides of the barF,ealch arm having an inward projection 9 which occupies one oftherecesses f thus pivotally and slidably connectingthe block with theraising member of the, jack. This block has a projectiong which engagein any ofthe notches f.

.It will-be seen that the construction scribed provides a'very'efficient and readily adjustable side step adapted to receive, andsupport an axle at various positions, whichmay be lower than the lowestposition of the head CL; To adjust the block up anddow n it isonlynecessary to tip it'out'slightly and raise or lower itfmanuallyasdesired. The

upper sur'face of the block jlS" corrugated or roughened atg to make. avgood. receiving surfaceforthe axle; "When the block is used as a sidestep, the Idownwardthrustof the axleistaken by the 'projection g in thenotchit occupies,;and by; a. lateral thrust the overhanging edgeof thebar F behind this,-'it'is only {necessary to lift theblock to itshighest position and. turn it. upside down when it rests on top of thehead Clin the position shown in'the dottedv lines G T in Fig.1. Inthisyposition, the block ex-f tends substantially horizontally restingon I the head C and'presentingwa concavity g4,

adapted to-receive the axle or bracket. v

When-the block isin the inverted top. position. described it rests onthe head C; at

. the outer edge thereof, and also where the inner edge g of theroughened surface of the block terminates, that is, where the armsspring from the body of the block. The vertical pland'however, thru theaxle seat 9 is preferably adjacent to the front edge of the rack bar Bso that there is no tendency of the block to slip rearwardly.

The extension block may be conveniently made of a malleable casting ofthe form shown, wherein the side arms are plate-like webs bracedintermediately by the portion of the casting which forms the projection9 Between the load engaging sun faces g3, g4 of the block is preferablyan intermediate vertical web 5/ providir strength and reducing thecross-section the block so that it may be conveniently malleableized.

raising member by means of apart so they may pass across and above thewebs 7: When above these webs the arms 9, being malleable, are hammeredslightly together, thus bringing them into the position shown in Fig. 2,where it will be seen they extend inward above the webs 7. The side barF, together with the head C, may be one integral malleable castingsuitably secured to the raising bar B.

lly reason of the combined step and extension, the jack provides threeranges of movement; namely, the side step for low heights, the head Gfor medium heights, and the step as a top extension G for extra highlifts. This desirable result is accomplished without the sacrifice ofcompactness 0r simplicity, and the jack is adapted for economicalmanufacture.

Having thus described. my invention, I claim 1. In a lifting jack, thecombination of a base member, a raising member slidably guided therein,and an adjustable extension adapted to beheld at the side of the raisingmember or on top thereof, as desired, with its normal load supportingsurface in engagement with the load supporting surface of the uppermember and having another face adapted to receive the load;

2. in a jack, a raising member and an extension pivotally and slidablyconnected with the raising member and adapted to extend to the sidethereof as a side step, or be held on top thereof as a top extension andhavi a load supporting surface adapted to engage a load in eachposition, the surface which supports the load when. the member is inside position, contacting with the top of the extension when'in theupper position.

3. In a lifting jack, the combination of a base member, a verticallifting member hav ing its upper face curved to receive a load andslidably guided therein in said has and having; a supplemental n'ieinberand a block pivotally and slidabl mounted on the supplemental member,and adapted to be held 'n'ojecting from an intermediate part thereof orat the top thereof and having a surface. curved to receive a load when.

, in upper position.

dfln a lifting jack, the combination of a base member, a raising memberslidabl v guided in the base member, a load receiving member mounted onthe raisin member,

said load member being mounted or longitudinal and pivotal movement onthe raising member, whereby it maybe held at the side of the raisingmember or reversed to rest upon the top thereof if desired.

5. The combination of a base member, at raising member slidably moimechanism for moving the raising member vertically with reference to thebase member, a block pivotally and slidably cons nected with the raisingmember and adapted 'ito be held at the rear or the IZHSD'EQ; member withone surface uppermost and at the top of the raising member with anothersurface uppermost to thereby form an extension of said raislng member.

6; In a 1&Ck, the combination with a'base member, of ralsing member sldably guided therein, said raising member having a vertical row ofsupporting projections, an

extension block movable on the rais ng' member and having a projectionadapted to coact with any of the projections in; said vertical row ton'ia'ke a side-step, said extension member having its under surfaceformed to receive a load and being adapted to be inverted onto the topof the raising mem ier while it remains connected therewith and havingits loadsupportino'; surface in contact with the top of said raisingmember.

7. In a jack, the combination with a base member, a raising bar slidablyguided therein. a vertical supplemental bar connected with said i sirugbar, an extension member pivotally a l slidably connected with thesupplemental bar and being adapted to be held at the side thereof, orinverted-and thereby positioned above thesa1d raising bar, saidextension havlng seats for the load on both its upper and under surface,one

oted therein( of the normally upper surfaces being in contact with theupper portion of said barv vertical recesses in its sides, and a blockhaving arms-extendingacro-ss the sides of said vertical bar, said armshaving inward projections'adapted to occupy the recesses,

the block having a shoulder between thevv arms adapted to enterthe'spaces between the teeth mentioned whereby the block is slidably andpivotally connected to said bar,

said recess extending adjacent the top of said bar to allow inversion ofthe block when adjacent the top of the bar, whereby the former loadsupporting surface thereof is brought into engagement with the top ofthe bar to allow the use of an additional load supporting surface ofsaid block.

9. In a lifting jack, the combination with a base member, a liftingmember having a portion with vertical recesses in its sides, and a blockhaving arms extending crosswise of said recesses, said arms havinginward projections adapted tooccupy the recesses, means to adjustablyposition the block at the side of the lifting member, said block havingload supporting surfaces on both its upper and under sides, and beingadapted to swing over onto the top of the lifting member and besupported thereby.

IO. In a jack, the combination of a base, member, a raising barslidablyguided there:

in, an operating mechanism for raising the bar or lowering 1t,asupplemental bar at the-rear of'the raising bar connected with it,there being ahead at the upper ends of the saidbars, said supplementalbarhaving block having arms overlapping said re cesses, the-arms havinginward pins extending into the recesses, and the block havingverticalrecessesin its sides, and a movable twoload supporting surfaces,and being adapted to stand as a step at the rear of the bar or beinverted above the head at v the to i '1 11. n a jack, the combinationof a base of the bar.

member, a raising bar slidably guided therein, an operating mechanismfor raising the bar or lowering it, a supplemental bar at the rear ofthe raising bar connected with it, said supplemental bar having verticalrecesses in its sides, and a movable block having arms overlapping saidrecesses, the i arms having inward pins: extending into the recesses,and the block having two load suppor'ting surfaces, and being adapted tostand as a step at the rear of the supplemental bar or. be invertedabove the top of the raising bar, the block having a projection whichmay engage a notehin the supplemental bar when the block'is a sidestep,-

and said projection forming the endiportion of the load support when theblock is turned; 4

over onto the top of the raisingbar.

In testimony my signature.

whereof,"I hereunto afiix I EDMUND; o. I Barns. I

